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Configuration Guide - Ethernet Switching

S1720, S2700, S5700, and S6720 V200R012(C00 and C20)

This document describes the configuration of Ethernet services, including configuring MAC address table, link aggregation, VLANs, VLAN aggregation, MUX VLAN, VLAN termination, Voice VLAN, VLAN mapping, QinQ, GVRP, VCMP, STP/RSTP/MSTP, VBST, SEP, RRPP, ERPS, LBDT, and Layer 2 protocol transparent transmission.
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Setting the Link Aggregation Mode to LACP

Setting the Link Aggregation Mode to LACP


Link aggregation can work in manual mode or LACP mode depending on whether LACP is used.

In LACP mode, you must manually create an Eth-Trunk and add interfaces to the Eth-Trunk. However, LACP controls active interfaces through negotiation.

If an Eth-Trunk interface has member interfaces, you can switch the Eth-Trunk interface's working mode between manual mode and LACP mode. However, if the Eth-Trunk interface is added to an E-Trunk, you cannot change its working mode.

To delete existing member interfaces, run the undo eth-trunk command in the interface view or the undo trunkport interface-type interface-number command in the Eth-Trunk interface view.


  1. Run system-view

    The system view is displayed.

  2. Run interface eth-trunk trunk-id

    The Eth-Trunk interface view is displayed.

  3. Run mode lacp

    The Eth-Trunk is configured to work in LACP mode.

    By default, an Eth-Trunk works in manual mode.

    Before configuring an Eth-Trunk, ensure that both devices use the same working mode.

Updated: 2018-12-24

Document ID: EDOC1100038339

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